Vehicular Synthetic Aperture Radar for Small Target Detection
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Solution Overview
Problem
Conventional synthetic aperture radars mounted on large platforms are not suitable for surveillance and reconnaissance in smaller-scale operations, such as combating terrorism, as they are ill-equipped to detect and image small targets or movements in confined spaces.
Innovation Solution
A synthetic aperture radar system housed within a land vehicle, equipped with an antenna array, computing system, and power generator, which processes electro-magnetic radiation to generate high-resolution images of objects while the vehicle is in motion, providing enhanced edge detection and classification capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If synthetic aperture radar is mounted on large platforms, then the radar can detect and image large-scale targets, but it is ineffective for detecting small targets and movements in confined spaces
Solution Approach 1:
The synthetic aperture radar system is nested within a land vehicle platform, which itself is nested within the operational environment. This nesting allows the radar to be deployed in confined spaces while maintaining its detection capabilities for small targets, resolving the contradiction between platform size and detection precision.
Solution Approach 2:
The radar system changes its operational parameters including transmitting multiple different frequencies and adjusting beam directions to enhance detection of small targets. This parameter variation allows the system to achieve high measurement precision for small targets while operating from a compact land vehicle platform.
2Measurement precision
If synthetic aperture radar transmits multiple different frequencies, then the resolution of generated images is improved, but the energy consumption increases
Solution Approach 1:
The radar transmits electromagnetic energy in periodic pulses at multiple different frequencies rather than continuous transmission. This periodic action allows the system to achieve high image resolution through multi-frequency analysis while managing energy consumption by transmitting only during necessary pulse intervals.
3Area of stationary object
If the radar beam direction is changed to scan the environment, then the coverage area is increased, but the time required for complete scanning increases
Solution Approach 1:
The system performs preliminary actions by transmitting electromagnetic energy in multiple beam directions simultaneously or in rapid succession during the integration period. This preliminary multi-directional transmission allows the radar to generate images of the entire scanned area without requiring sequential scanning, thereby reducing total scanning time while maintaining comprehensive coverage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables effective intelligence, surveillance, and reconnaissance by providing high-resolution images of small targets and movements, suitable for smaller-scale operations, with the system's mobility and concealment features allowing it to operate in environments where larger platforms are ineffective.
Implementation Method 1
Radars detect remote objects by transmitting a beam of electro-magnetic energy and subsequently measuring reflected electro-magnetic energy from these objects.
Implementation Method 2
measuring reflected electro-magnetic energy from these objects
Implementation Method 3
Synthetic aperture radars (SARs) are a special type of radar that uses signal processing techniques to generate two-dimensional images from objects that are moving relative to its antenna.
Data Source
AI summary
According to one embodiment, a system for gathering intelligence, surveillance, and reconnaissance information comprises a synthetic aperture radar that is housed within an enclosure coupled to a land vehicle. The synthetic aperture radar includes an antenna array that transmits and receives electro-magnetic radiation for generating images of objects around the land vehicle while the land vehicle is in motion.